EP0790456B1 - Raccord à douille verrouillée pour tuyaux à manchon - Google Patents

Raccord à douille verrouillée pour tuyaux à manchon Download PDF

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Publication number
EP0790456B1
EP0790456B1 EP97102273A EP97102273A EP0790456B1 EP 0790456 B1 EP0790456 B1 EP 0790456B1 EP 97102273 A EP97102273 A EP 97102273A EP 97102273 A EP97102273 A EP 97102273A EP 0790456 B1 EP0790456 B1 EP 0790456B1
Authority
EP
European Patent Office
Prior art keywords
muff
compartment
ring
locking elements
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97102273A
Other languages
German (de)
English (en)
Other versions
EP0790456A1 (fr
Inventor
Jürgen Dr. Rammelsberg
Peter Brune
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Technologies AG
Original Assignee
Thyssen Industrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssen Industrie AG filed Critical Thyssen Industrie AG
Publication of EP0790456A1 publication Critical patent/EP0790456A1/fr
Application granted granted Critical
Publication of EP0790456B1 publication Critical patent/EP0790456B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/0842—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring which is split into a plurality of component parts which are held in place by means of a resilient ring member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/0845—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of retaining members associated with the packing member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe

Definitions

  • the invention relates to a locking device for a thrust-proof Plug-in connection of pipes according to the preamble of claim 1.
  • the version (DE 4134089 A1) is also known, in which with teeth provided locking segments together to form a flexible band are connected to which an annular holding part is formed, which on or above the face of the socket end.
  • the locking elements at the end of the sleeve during the insertion process fixed.
  • the elastic ring with its embedded metal frames are secured by additional measures, e.g. through a steel ring vulcanized into the holding part in front of the sleeve. This Stabilizing steel ring complicates the assembly of the locking ring due to its ring stiffness.
  • toothed retaining elements also vulcanized into a rubber ring.
  • the tooth tips are parallel to the pipe axis, before assembly the clear width between the tooth tips is smaller than the outside diameter of the pipe to be inserted.
  • the tooth segments slide outwards along the surface of the cone so that the clear width between the tips of the teeth increases until that Inserting can happen.
  • a circumferential elastic lip between the Retaining elements and the rear wall of the thrust protection chamber is axially compressed and thus ensures the radial forces that the teeth drive into the surface of the insertion end.
  • US-A-5 067 751 and EP 0 596 394 B1 are generic Locking devices known, in which also the Locking elements are held by a flexible ring.
  • the flexible ring when inserting the insertion end from the Sleeve chamber is pushed out and thereby an exact positioning the locking elements is difficult and it does not get the desired The teeth are pressed onto the outer surface of the insertion end.
  • the invention has for its object a locking device Specify the type described above, in which no welding bead is required and the subsequent bracing and fixing of the Locking elements on the insertion end can be omitted. Furthermore, the Locking device also for larger pipe sizes with simple Assembly lead to secure locking, whereby no problems with Installation of the flexible ring arise.
  • the toothed locking ring consists of individual, over the The circumference of the tooth segments evenly distributed in an elastomer ring deformable parts are vulcanized. These leave the at Insertion process necessary to shift the tooth segments.
  • Of the Ring has an outer diameter which is larger than the inner diameter the sleeve chamber is. This enlargement of the ring diameter a compressive stress in Circumferential direction generated due to the onset Vaulting holds the ring in place, allowing more Fixing elements are omitted.
  • the tooth segments are in the Vulcanized elastomer ring in such a way that the envelope of their tooth tips forms the section of a hollow cone.
  • This hollow cone is dimensioned that the large inner diameter of the cone section, on the first tooth from Seen sleeve entrance, slightly larger than the pipe outside diameter at maximum dimension (upper tolerance position).
  • the small inside diameter of the Cone section, seen on the last tooth from the socket entrance slightly smaller than the outside diameter of the pipe to be inserted the smallest possible dimension (lower tolerance).
  • the tooth elements become one in essential tilting movement forced, with which the small, rear The diameter of the cone section on the last tooth is increased until the pipe insertion end can slide through. Through this tilting movement the elastomer between the tooth elements and the rear part of the Lock chamber compressed.
  • the insertion end (1) has one smooth outer surface (3).
  • the sleeve end (2) has in the rear area a sealing chamber (4) for receiving a seal, not shown, the seals with the outer surface (3) when the insertion end (1) is inserted.
  • the Sleeve end (2) also has a larger one in the front area Socket chamber (5) on which to accommodate teeth (10) Locking elements is determined.
  • the locking elements are in one Vulcanized elastomer ring (7) and are supported with a torus support surface (8) on the conical surface (9) in the sleeve chamber (5).
  • the torus support surface (8) is designed so that the normals of the torus support surface (8) are always the one lying on the outer surface (3) of the insertion end (1), Cut the toothed section of the locking elements (6). So that is ensures that all tolerance pairs and angles of Plug-in end (1) and socket end (2) impermissible voltage peaks be avoided.
  • Fig. 2 shows in comparison to Fig. 1 that when inserting a large Inserting (narrow gap) in the elastic material of the elastomer ring (7) stored locking elements (6) around the point of contact between their torus surface (8) and the cone surface (9) were tilted to the large To let plugging happen.
  • This tilt has the right part of the Elastomer rings (7) (lip 7a) compressed on the rear wall of the socket chamber (5); the resulting axially outward pressure force leads to the fact that the locking elements (6) at their point of contact radially Experienced centerline of the insertion end (1) directed ultimately to Locking the teeth (10) on the outer surface (3) leads.
  • Fig. 3 shows the assembled connection with maximum gap ratios.
  • lip 7a is still sufficiently deformed to fit the secure locking of the teeth (10) on the outer surface (3) necessary forces directed radially to the center line of the insertion end (1) produce.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (2)

  1. Dispositif de verrouillage pour un raccord à douille verrouillée avec des tubes présentant un bout mâle (1) qui est introduisible avec un jeu axial dans le manchon d'extrémité (2) d'un tube voisin, le manchon d'extrémité (2) présentant une chambre de manchon annulaire (5) avec une surface d'appui (9) pour des éléments de verrouillage (6), les éléments de verrouillage (6) munis de dents (10) étant reliés entre eux pour former une bague flexible (7), les éléments de verrouillage (6) étant répartis dans la bague (7) sur le pourtour en ayant un écart entre eux, la bague (7) étant maintenue dans la chambre du manchon (5), les dents (10) étant pressées radialement de l'extérieur contre la surface extérieure du bout mâle (1) lorsque le raccord est réalisé, le plus grand diamètre intérieur de la chambre du manchon (5) étant inférieur au diamètre extérieur de la bague (7) avant l'insertion dans la chambre du manchon (5), les dents (10) des éléments de verrouillage (6) reposant avant le montage sur l'aire latérale d'une section conique, le plus petit diamètre de la section conique du bout mâle (1) étant inférieur au plus petit diamètre du bout mâle (1) et le plus grand diamètre de la section conique étant supérieur au plus grand diamètre du bout mâle (1) caractérisé en ce que les éléments de verrouillage (6) s'appuient directement avec une surface d'appui torique (8) sur une surface d'appui dans la chambre de manchon (5), ladite surface ayant une forme conique, que les éléments de verrouillage (6) sont basculables autour du point de contact au niveau de la surface conique (9) lorsque le raccord est réalisé et que le profil de la bague (7) possède une lèvre (7a) dirigée radialement vers l'extérieur et s'appuyant sur l'une des parois opposées à la surface de cône (9) dans la chambre du manchon (5) et qu'elle peut être déplacée en arrière sur cette paroi dans le sens de mouvement opposé du bout mâle (1) lors de l'assemblage du raccord.
  2. Dispositif de verrouillage selon l'une des revendications 1 caractérisé en ce que des parties de la bague flexible (7) génèrent un effort orienté radialement vers l'axe du tube suite à leur déformation dans la chambre du manchon (5), ledit effort enfonçant les dents (10) dans la surface du tube (3) aussi bien avec le plus petit interstice de raccordement qu'avec le plus grand.
EP97102273A 1996-02-17 1997-02-13 Raccord à douille verrouillée pour tuyaux à manchon Expired - Lifetime EP0790456B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19605993 1996-02-17
DE19605993 1996-02-17

Publications (2)

Publication Number Publication Date
EP0790456A1 EP0790456A1 (fr) 1997-08-20
EP0790456B1 true EP0790456B1 (fr) 1999-06-16

Family

ID=7785729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102273A Expired - Lifetime EP0790456B1 (fr) 1996-02-17 1997-02-13 Raccord à douille verrouillée pour tuyaux à manchon

Country Status (2)

Country Link
EP (1) EP0790456B1 (fr)
DE (2) DE19705443A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3543578B1 (fr) * 2016-11-21 2021-02-24 Xinxing Ductile Iron Pipes Co., Ltd Corps d'ancrage composite, dispositif de raccordement de conduite utilisant le corps d'ancrage et procédé d'installation associé

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL170325C (nl) * 1975-10-27 1982-10-18 Wavin Bv Kunststofbuiskoppelingsconstructie.
US5067751A (en) * 1990-07-27 1991-11-26 American Cast Iron Pipe Company Gasket for field adaptable push-on restrained joint and joint thus produced
US5464228A (en) * 1992-11-04 1995-11-07 United States Pipe And Foundry Company Restraining element for pressure pipe joints
DE4324093C2 (de) * 1993-07-17 1998-09-03 Thyssen Industrie Schubgesicherte Steckverbindung für Muffenrohre, insbesondere aus duktilem Gußrohr

Also Published As

Publication number Publication date
DE59700205D1 (de) 1999-07-22
DE19705443A1 (de) 1997-10-30
EP0790456A1 (fr) 1997-08-20

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